Abstract

A new approach to the topological design of hybrid circuits: Walter Ulbrich and Rudolf van der Leeden. Electrocomp. Sci. Technol.7, 181 (1980)

Highlights

  • In this paper we deal with a problem which is of central importance in the design of hybrid microelectronic circuits

  • We propose an algorithm for the constructive and implicit enumeration of all possible "net"-arrangements, while the "flock"-arrangement will be done by hand by means of man-machine interaction

  • The general mapping rules are as follows: Each terminal is mapped into a unique vertex of S; Each terminal gap constrained by a crosscapacity equal or greater zero is modelled by an edge; all edges of a circuit element form a flock, which is the image of this element in S;

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Summary

A NEW APPROACH TO THE TOPOLOGICAL DESIGN OF HYBRID CIRCUITS

Lehrstuhl far Netzwektheorie und Schaltungstechnik, TUMfinchen, Arcisstra3e, 21, D-8 Mfinchen 2 and RUDOLF VAN DER LEEDEN D-8153 WEYARN (Received September 3, 1980). A computer-aided topological hybrid layout-design procedure is proposed, that yields the wanted principal routing in the form of a geometrical planarization graph. A so-called grid-embedding of a circuit graph into the Euklidean plane enables us to observe all except one of the various technological constraints. The real problem is reduced to finding a proper arrangement of "nets" and "flocks" in the plane in order to meet the omitted cross-capacity constraint. The solution is accomplished by a constructive and implicit enumeration procedure, which is used within an interactive man-machine design proces

INTRODUCTION
II lineelement element el emen"
CIRCUIT GRAPH S
PLANARIZATION GRAPH G
PLANARIZATION
PRACTICAL EXAMPLE
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